linux-kernel - Re: [PATCH] drm/i915/dp: Stop enabling limited color ranges for everything

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Date:   Thu, 5 Jan 2017 10:04:04 +0000
From:   Daniel Stone <daniel@...ishbar.org>
To:     Jani Nikula <jani.nikula@...el.com>, Lyude <lyude@...hat.com>,
        intel-gfx <intel-gfx@...ts.freedesktop.org>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/i915/dp: Stop enabling limited color ranges for everything

Hi,

On 5 January 2017 at 08:52, Daniel Vetter <daniel@...ll.ch> wrote:
> On Thu, Jan 05, 2017 at 10:41:07AM +0200, Jani Nikula wrote:
>> No matter what we do here, the question remains what to do with
>> Chamelium. Changing the color range is really a workaround for
>> Chamelium, not a fix. Using CEA range is perfectly fine per DP spec.
>
> Can we just set a non-CEA mode/edid for chamelium, problem solved? We want
> to do that anyway for HDMI, where you really have to do the limited range
> dance to make stuff display correctly.

Or, if you set the 'Broadcast RGB' connector property to 'Full',
you'll never hit the color_range_auto branch in the first place ...

Cheers,
Daniel